Background: Yee (2002) makes a serious effort to distunguish between a "user" and a "user agent". Section 3.1 states "On a single-user system, the user agent is the operating system shell".
Resolved: This definition of "user agent" is used consistently throughout the paper.
References:
Yee, Ka-Ping (2002) "User Interaction Design for Secure Systems", Report No. UCB/CSD-02-1184, University of California Berkeley, Computer Science Division.
Copyright 2009